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Electrochemical deposition and thermoelectric characterisation of a semiconducting 2-D metal-organic framework thin film.

Electrochemical deposition and thermoelectric characterisation of a semiconducting 2-D metal-organic framework thin film.
Electrochemical deposition and thermoelectric characterisation of a semiconducting 2-D metal-organic framework thin film.
The electrical conductivity and porosity of the 2-dimensional metal–organic framework Cu3(2,3,6,7,10,11-hexahydroxytriphenylene)2 [Cu3(HHTP)2] make it a promising candidate for thermoelectric applications. In this work, we report the electrochemical synthesis of Cu3(HHTP)2 films by an anodization approach and an evaluation of its thermoelectric properties. The electrochemically synthesised Cu3(HHTP)2 thin films were transferred using a wet chemical method in order to perform electrical measurements. We are reporting the first thermoelectric measurements of this framework both in bulk and thin film form which resulted in Seebeck coefficients of −7.24 μV K−1 and −121.4 μV K−1 with a power factor of 3.15 × 10−3 μW m−1 for the film respectively. The negative Seebeck coefficients suggest that Cu3(HHTP)2 behaves as an n-type semiconductor. Since the introduction of conductive MOFs in electronic devices is at an early stage of development, we believe this work validates the use of electrochemical synthetic routes of conducting MOFs to further investigate and expand their applications in thin film technologies.
2050-7488
13197-13206
Gonzalez Juarez, Maria De Lourdes
1889c77f-4172-4394-b704-0c03968c7a87
Flores, Eduardo
196ba136-395b-4c81-82b4-808525502491
Martin-Gonzalez, Marisol
56c53399-eb42-47de-856b-971617748304
Nandhakumar, Iris S.
e9850fe5-1152-4df8-8a26-ed44b5564b04
Bradshaw, Darren
7677b11e-1961-447e-b9ba-4847a74bd4dd
Gonzalez Juarez, Maria De Lourdes
1889c77f-4172-4394-b704-0c03968c7a87
Flores, Eduardo
196ba136-395b-4c81-82b4-808525502491
Martin-Gonzalez, Marisol
56c53399-eb42-47de-856b-971617748304
Nandhakumar, Iris S.
e9850fe5-1152-4df8-8a26-ed44b5564b04
Bradshaw, Darren
7677b11e-1961-447e-b9ba-4847a74bd4dd

Gonzalez Juarez, Maria De Lourdes, Flores, Eduardo, Martin-Gonzalez, Marisol, Nandhakumar, Iris S. and Bradshaw, Darren (2020) Electrochemical deposition and thermoelectric characterisation of a semiconducting 2-D metal-organic framework thin film. Journal of Materials Chemistry A, 2020 (8), 13197-13206. (doi:10.1039/D0TA04939E).

Record type: Article

Abstract

The electrical conductivity and porosity of the 2-dimensional metal–organic framework Cu3(2,3,6,7,10,11-hexahydroxytriphenylene)2 [Cu3(HHTP)2] make it a promising candidate for thermoelectric applications. In this work, we report the electrochemical synthesis of Cu3(HHTP)2 films by an anodization approach and an evaluation of its thermoelectric properties. The electrochemically synthesised Cu3(HHTP)2 thin films were transferred using a wet chemical method in order to perform electrical measurements. We are reporting the first thermoelectric measurements of this framework both in bulk and thin film form which resulted in Seebeck coefficients of −7.24 μV K−1 and −121.4 μV K−1 with a power factor of 3.15 × 10−3 μW m−1 for the film respectively. The negative Seebeck coefficients suggest that Cu3(HHTP)2 behaves as an n-type semiconductor. Since the introduction of conductive MOFs in electronic devices is at an early stage of development, we believe this work validates the use of electrochemical synthetic routes of conducting MOFs to further investigate and expand their applications in thin film technologies.

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More information

Accepted/In Press date: 19 June 2020
e-pub ahead of print date: 19 June 2020

Identifiers

Local EPrints ID: 442607
URI: http://eprints.soton.ac.uk/id/eprint/442607
ISSN: 2050-7488
PURE UUID: 872df5d4-4e13-4138-8b2c-3a631fa60a5e
ORCID for Iris S. Nandhakumar: ORCID iD orcid.org/0000-0002-9668-9126
ORCID for Darren Bradshaw: ORCID iD orcid.org/0000-0001-5258-6224

Catalogue record

Date deposited: 21 Jul 2020 16:30
Last modified: 18 Feb 2021 17:17

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